James



(No Model.)

J. B. AGKERSON.

SULPHURIG ACID GONGENTRATOR.

No. 453,801. Patented June 9,1891.

nrrnn STATES PATENT OFFICE,

JAMES ll. ACKERSON, OF PASSAIC, NElY JERSEY.

,SULPHURlC-ACED CQNC-ENTRATOR.

SPECIFICATION forming part of Letters Patent No. 453,801, dated June 9, 1891.

Application filed March 16, 1891. Serial No. 385,148. (No model.)

To all whom it may concern:

Be it known that; I, JAMEs 13. ACKEnso-N, oi lassaic, in the county of .lassaic and Stateol New Jersey, have invented an Improvement in SulphuricAcid Concentrators, of which the following is a specification.

Sulphuric acid concentrators are often made of platina and are expensive. My concentrator is adapted to be made of cast-iron and is cheap anddurable and not liable to be comedefective while in use, and my invention relates to the peculiarities of construction hereinafter set forth.

in the drawings, 'i igure 1 is a longitudinal section. Fig. 2 is a cross-section at the line 26 42c, and Fig. 3 is a sectional plan.

The still or concentrator is made of a single casting of iron, so as not to have scams or joints, and in practice I find that the more concentrated the sulphuric acid is the less it acts upon the metal.

The general configuration of the still is rectangular, having a bottom 2, sides 3 3, ends 4 5, double inclined top 6, and escape-pipe 7, to which latter any suitable tube is connected to convey away the vapors driven oil from the acid,as usual. The partitions 8 9 extend across from one side to the other and are in one with the bottom and sides; but there is a free space above the partitions and within the peak of the top for the vapors to pass from all parts of the concentrator to the escape-pipe, and in these partitions there are openings 10 11, near opposite ends of such partitions,so as to com pcl the acid to travel regularly through the tortuous passage from the supply-cup to the delivery opening or pipe 10. The openings 10 or 11 do not reach to the sides of the concentrator or to the bottom. This is advantageous, because the acid is all brought closely into contact with the metal in passing through such holes, and its action tends to wear away such metal, and the sides and bottom would be rendered thin and weak at these places if the openings extended to the same. Near the bottom of the supplycup is an opening 18, and this is to be of such a size and placed so that the acid as it lies on the bottom of the stillwill cover this opening to prevent the escape of vapors therefrom.

At the delivery-opening 16 a suitable pipe is connected to carry away the concentrated acid and prevent the escape of gases.

In use I tind thatthe concentration is very regular and rapid, because there is a large or:- tcnt of surface exposed at the bottom of the still to the concentrating action of the heat.

I claim as my invention The acid-concentrator composed of a cast mctalvesscl in one piece with double inclined top and a vapor-discharge therein, a supplycup and opening at one end, a discharge-opening at the other end, and transverse partitions having openings near their alternate ends, substantially as set forth.

Signed by me this 10th day of March, 1891.

JAMES B. ACKERSON.

Witnesses:

GEO. T. lmonnnr, WILLIAM G. More 

